The fight for the title of the Nine Sons has entered a fierce stage, and the Prince Yong's Mansion is calm on the surface, but in fact there are undercurrents. The women in the backyard are divided into three factions: the orthodox faction headed by Fujin, the concubine faction headed by Nian Shi, and the lying-down faction represented by Jiang Suiwan. The palace implements a strict monthly routine system, but Jiang Suiwan's 'takeaway kitchen' breaks the balance and triggers a backyard economic revolution.